I haven't tried UltraFXP, but another fine ftp client that is free for personal use is SmartFTP. I've been using it for several months and have really enjoyed it.

But as you say Morpheus, this is a bizarre exchange, and it is hard to understand how something as basic as an FTP client could have a lot to protect. I can't say much about this case in particular, but copyright issues have definitely gotten out of hand, especially since the enactment of the Digital Millenium Copyright Act...